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She said: "Despite previous warnings about the issue of sheep worrying, particularly during lambing season, another sheep has suffered horrific injuries and died.

"This is absolutely unacceptable and in addition to the financial impact on the farmer, it is also extremely distressing to find one of your animals has been mauled.

"As we head towards the summer months, we are taking this opportunity to remind all dog walkers and owners of their responsibilities. Dogs attacking, chasing and being in close proximity to sheep can all be considered livestock worrying. A dog nearby can cause sheep to panic and flee, resulting in serious injury or even death.

"All dogs are capable of chasing livestock and they do not understand the impact this can have, however owners do.

"Avoid fields with livestock when out walking and keep dogs on a short lead where this isn't possible."

The dog walker was thought to be driving a small white van with registration plate starting NK08.

Those with information in relation to this incident can contact Cupar Police Station and quote incident number 1099 of the 7 May.

Alternatively, an anonymous report can be made to the charity Crimestoppers on 0800 555 111.

In a separate incident last month a sheep died after being violently attacked by dogs on a farm near Rosewell in Midlothian.